Preparation, characterization and functional evaluation of soy protein isolate-peach gum conjugates prepared by wet heating Maillard reaction.
Food Res Int
; 192: 114681, 2024 Sep.
Article
in En
| MEDLINE
| ID: mdl-39147541
ABSTRACT
This study was conducted to formulate a conjugate of soy protein isolate (SPI) and peach gum (PG) with improved functional properties, interacting at mass ratios of 11, 12, 13, 21, and 23 by Maillard reaction via wet heating method. Conjugation efficiency was confirmed by grafting degree (DG) and browning index (BI). Results indicated that DG increased with increasing concentration of PG, and decreased with increasing pH, whereas no remarkable change was observed with increasing reaction time. The conjugates were optimized at a ratio of 13. SDS-PAGE confirmed conjugate formation, Fourier transform infrared spectroscopy (FTIR) and circular dichroism (CD) verified conjugate secondary structural changes, and scanning electron microscopy (SEM) indicated significant overall structural changes. The functional properties, solubility, emulsifying stability, water holding, foaming, and antioxidant activity were significantly improved. This study revealed the wet heating method as an effective approach to improve the functional properties of soy protein.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Solubility
/
Maillard Reaction
/
Soybean Proteins
/
Hot Temperature
/
Antioxidants
Language:
En
Journal:
Food Res Int
Year:
2024
Document type:
Article
Affiliation country:
China